| Thousands of people are undergoing endoscopic exams daily without having tissue samples obtained. Sadly, though their exams may visually appear normal, under the microscope there are often microscopic findings that explain the symptoms that will respond to directed therapy. The gut is lined with superficial cells that contain a few immune cells that release chemical mediators that attract other cells to the area and fight off foreign invaders. Below is a table of normal values for various cells in the digestive tract lining.Lymphocytes, eosinophils and mast cells are the immune cells that are...
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